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UNIX for Dummies Questions & Answers
single user mode - user accounts passwords
Post 65812 by Perderabo on Wednesday 9th of March 2005 08:54:03 AM
03-09-2005
Ahem, another "relic" checking in here... 
The NCR Tower ran AT&T System V, not Xenix. You need to keep that ADDS terminal since the software needs to run curses based programs with a limited number of supported terminal types.
It's been almost 15 years since I've seen an NCR Tower and I don't remember enough about them to be helpful. However I have a TOWER 32/8XX Support Student Manual dated 1989. It is very terse, but I might have a procedure that may work. You will need an OOS tape to do it. These instructions are for Release 010100 by the way.
"Press the RESET button on the System Control Submodule on the Master AP." I seem to remember opening a door to expose all of the cards to reach this switch, but I'm not sure.
You should get a menu "Select Start-Up Function". Select "1. Load". You will be asked for the load device and you need to use "st00". You should now see a "System Loader Functions" menu. Select "5 Load Out-of-Service System". This should give you a list of terminal types. Pick yours.
You should get a OOS menu. I think "3. Service Utility Shell" is the best choice. You want to get to a bourne shell prompt. Now you need the name of the root disk. If you don't know, try the default:
mount /dev/dsk/10s1 /mnt
Now you need to fix /mnt/etc/passwd to change or remove the root password or create a root equivalent account with no password.. Exactly what you do depends on what programs you have available and I don't know what you have at this point. Any unix expert should be able to take it from here. Good luck.
The NCR Tower ran AT&T System V, not Xenix. You need to keep that ADDS terminal since the software needs to run curses based programs with a limited number of supported terminal types.It's been almost 15 years since I've seen an NCR Tower and I don't remember enough about them to be helpful. However I have a TOWER 32/8XX Support Student Manual dated 1989. It is very terse, but I might have a procedure that may work. You will need an OOS tape to do it. These instructions are for Release 010100 by the way.
"Press the RESET button on the System Control Submodule on the Master AP." I seem to remember opening a door to expose all of the cards to reach this switch, but I'm not sure.
You should get a menu "Select Start-Up Function". Select "1. Load". You will be asked for the load device and you need to use "st00". You should now see a "System Loader Functions" menu. Select "5 Load Out-of-Service System". This should give you a list of terminal types. Pick yours.
You should get a OOS menu. I think "3. Service Utility Shell" is the best choice. You want to get to a bourne shell prompt. Now you need the name of the root disk. If you don't know, try the default:
mount /dev/dsk/10s1 /mnt
Now you need to fix /mnt/etc/passwd to change or remove the root password or create a root equivalent account with no password.. Exactly what you do depends on what programs you have available and I don't know what you have at this point. Any unix expert should be able to take it from here. Good luck.
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LEARN ABOUT DEBIAN
su-to-root
su-to-root(1) Debian GNU/Linux manual su-to-root(1) NAME
su-to-root - A simple script to give an `interactive' front-end to su. It can be used in menu entry commands to ask for the root password SYNOPSIS
su-to-root [-X] [-p <user>] -c <command> DESCRIPTION
Most menu entries simply start an editor or a game or whatever. But some menu entries would like to give the user the ability to change important settings in the system, that require root privileges. su-to-root can be used to ask for the root password. OPTIONS
-c <command> The command to execute as a string. This option is mandatory. -p <user> The name of the user to change to, instead of root. -X The command is a X11 program that does not require a terminal. This is to be used with menu entries that declare needs="X11". ENVIRONMENT
SU_TO_ROOT_X Select the su-like program called by su-to-root -X. Supported values are gksu, kdesu, kde4su, ktsuss, sux, gksudo and kdesudo. kde4su denotes the KDE4 version of kdesu. When this variable is not set su-to-root will currently try to use gksu, kdesu, kde4su, ktsuss, sux and the built-in code, in that order with the exception that under a KDE session, kdesu and kde4su are prefered over gksu. The exact set of programs to try and their order is subject to change without notice. SU_TO_ROOT_SU Select the su-like program used in text mode. Supported values are sudo, sux and su, the later being the default. FILES
/etc/su-to-rootrc ~/.su-to-rootrc su-to-root will source these files at startup in this order. This lets you define and modify the environment variables above without restarting your X session. COPYING
su-to-root is distributed under the GNU General Public License. (GPL 2.0 or greater). AUTHORS
Joost Witteveen <joostje@debian.org> X11 support by Morten Brix Pedersen and Bill Allombert <ballombe@debian.org> SEE ALSO
update-menus(1), menufile(5), /usr/share/doc/menu/html Debian Project 20 October 1998 su-to-root(1)